Performance of RFC calls
We're developing a web dynpro that has to be sized for 3000 concurrent users. We're going to use CRM as backend, and mostly have read-only calls (no need for transactions).
What is the prefered way of connecting WebDynpro to CRM? I've understood that we could run into perfomance issues due to connection pooling/connections not being released, if we're using aRFC.
Should we be using XI and connect to abap proxys, or develop our own EJB-SessionBean-solution that connects using RFCs?